Energy Phase Correlation and Pulse Dynamics in Short Bunch High Gain FELs
Abstract
We analyze the dynamics of Free Electron Laser (FEL) devices, operating with a bunched beam exhibiting a longitudinal phase space correlation. We show that the presence of an energy-position correlation term is responsible for very interesting effects like an enhancement of the peak output power, a shortening of the laser pulses and an increase of the non linearly generated harmonic intensities. We conjecture that the mechanism is due to a kind of energy tapering effect associated with the correlation. We discuss the difference of the dynamics with respect to an ordinary undulator tapering and the relative advantages.
- Publication:
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arXiv e-prints
- Pub Date:
- November 2010
- DOI:
- 10.48550/arXiv.1011.1341
- arXiv:
- arXiv:1011.1341
- Bibcode:
- 2010arXiv1011.1341D
- Keywords:
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- Physics - Accelerator Physics